Humidifying apparatus



Dec. 19, 1939.. R. E. DAL-Y ET AL 2,134,094

HUMIDIFYING APPARATUS Filed NOV. 25, 1936 5 Sheets-Sheet 3.

Jinn

INVENTORS ROBERT.0ALY d BERNARD 605m;

ATTORNEY.

M 19, 19390 R. E ET HUMIDIFYING APPARATUS Filed Nov. 25, 1956 3 Sheets-Sheet 2 IN VENTORS ROBERT E. 04 L Y 4 BERNARD 605/? a ATTORNEY.

-- 19, 1939. R. DALY ET AL 23849094 nummm'me APPARATUS Filed Nova 25, 19:56 5 sheets-sn' et s mmlllllm INVENTORS Roam r 5. 0/11. y @d BERN/4R0 Gas/w W ATTORNEY.

Wee. E9, 1939 I 7 i 2,184,094 1, r a f Robert Ei Daly, New Yorky and Bernard-Goerg -Bronxville,-N. Yi, assignorgiiby; mesnaaSsign- 3 y e ments, to American Radiator & Standard San-, :itary .Corporation, New York, ;-N. if a corpos q;ra .tion-of;l)elaware e i "Appl eatio N ivemper 25; 1935;; sem :No. 112,814 i SCI aims. or 2514,42); r v Our invention relates to "improvements air? Fig, 2 isian enlarged side elevation-of the hu' conditioning means, and the same has for its "Inidifying apparatus detachedfrom the boiler; object to provide'a simple,eflicient and'conipara- 2 1s atop view" thereof;

tively inexpensive humidifyingfapparatus ito be E'Fig. sis j e non fonfthe"liner-4 'ofFig. 3; 5 operated in conjunction witha house heating 5 islanf enlarged detail'Sideelevation i boiler or heating apparatus; 'theheatingelement; Y

Further, said invention has for its object to" IfFigQjHis a verticalsection thereof on the line provide a humidifying apparatus which may be 6'-6 of Fig.5;

' readily applied'to a boiler'or like heating appa- Fig. '7 isa transverse section on the line 1-1 ratus, whereby the water used will bevapo'rized Of Fig. 5, and 7 and mingled with air, and the vapor-charged] Fig; 8 is a diagrammatic view'showing thecirair then heated to such, temperature as will pre-' cuitc'onn'ection's." l vent any material condensation occurring there? In said drawing ID designates a boiler-of the in before the same is discharged into theroom or generally used 'for: house heating purposes,

space in which the atmosphere is to be ultimately "l l' denotes'lthe humidifying apparatus con- 16 controlled. j j nected thereto comprising a hollow cast metal Further, said invention has for its object to heating element lzioffsubstantially rectangular provide an apparatus of the 'characterspec'ifiedj outline andprovided upon its cuter-surface with in which a relative'ly smallquantity ofjwater is vertically extendedsurfa'ce members or fins l3 0 constantly vaporized andmix ed with air, and the coextensiveji n -With t height f the 20 vapor charged-air supplied under pressure to" e 'fel m nt. i im" surfaces of the the place of' discharge. t I 1 heating'element are also providedwithextended Further, saidinvention has for its object tof surfac'emembers or fins l4=which are substanprovide anapparatus of the character specified tially coextensive in. length with the interior which may be readily attached to a boiler, and in height of'the element; can be seen more 25 which a jet of water is caused to be vaporized and I c y 3 i t xem of 8 d 0 mixed with air, thetemperature of the mixture the drawings; n? heating element is further increased, and the mixture thence forced structed j relatively i slab-like o y. T under pressure from the apparatus to the place g element is Provided at i base with of discharge. V supporting foot l5, andupon one-side at its top, 30

Further, said invention has for its object to a r its central portion with tapped studs or provide a humidifying apparatus in which water lugs 2 resliectwely- 5 slde- 15 is vaporized and mixed with is andinitially' ther Provlded Wlth n upper i heated, and thereafter the temperature of the ,7 thereof b w n th g to form barner mixture further increased so that the same, while I 1n Wa l in its uPPer'Part a.depres' 35 passing to the place of discharge, will not lose f recess p OPPOSIte slde, heat to such degree that the entrained vapor P fi m' i d heatmg nt 15 will be condensed before the mixture can reach n -"i t ylmf k i to whicl? 15 the place of its ultimate discharge intothe room i dpf' u y plpe from M or space whereof the atmosphere is to be modie. {space of poll?! fled or conditioned V I I, at its lower end said heatingelement'is provided Other objects will in part be obvious and in mm a? outlet port to whlch 18 connected one end of areturn-pipe 22- leading to thebo'iler I0.

Part be pointed out hereinafter. n Theahetmg element '2 ismd'isposed within a the a m m of w aicresald Objects rectangular sheet metal housing '23, preferably and ends our im m thenoYel 'made 'of copper, and saidheating element is setures oi construction, and Lin the COl'IlblllfitlOIl, cured in pnsition therein against a side wall of connectlon and rr m of a here1naft9r the housing by screws 24 which pass through said more fully f i' and hen' l out sidewall and'into the 'studs' or lugs l6, I! of said the claims. l 'heatingfieleinent.

In the acc mp ylng raw1n s-' The casing 231s provided in its top with one Figure l is a side elevation showing aboiler or more outletopenings 25 in which inay be and one form of humidifying apparatus consecured the ends of sheet metal delivery pipes structedaccording to and embodying ourinvenor ducts' 26, and at its base said casing is pro- 5 tion applied thereto; vlded with a small outlet 21 to which is connected a drain pipe 28 for the removal of excess water or of any condensate which may be produced or collect in the apparatus.

The casing 23 is provided in its side to which the heating element I2 is secured with a circular opening 29 which is disposed centrally with respect to the depression or recess I 8 in the side of the heating element, and over said opening is secured one end of a tubular housing 30 which is disposed at right angles to the casing and secured to the wall thereof by the screws 24 passing through ears or lugs 3| on the inner end of said tubular housing 30. Within the closed outer end 3| of the housing 30 is centrally mounted a water spray nozzle 32 connected to one end of a supply pipe 33 extending from a source of water supply. The supply pipe 33 is provided with a solenoid valve 33 for controlling the same.

Upon the side of the nozzle 32 is a bearing 32- in which is adjustably secured one end of a rod 34 having a circular target or distributing plate 35, preferably of non-corrosive metal such as stainless steel, secured at its free end. --'I'he said target or distributing plate 35 is disposed within the recess or depression I8 of the heating element I 2 but in spaced relation thereto in order 2 to permit of the-free circulation of heated air inlet opening 39. The blower 38 is mounted upon and fluid around the same.

The tubular housing 30 is provided in its upper side adjacent its outer end with a flanged opening 36 in which is fitted the discharge end 31 of electrically operated rotary blower 38 having an a bracket 40 secured by screws 4| to the upper side of said tubular housing 30.

In the diagram, Fig. 8, the conductors 41, 48 extend from a suitable source of electric energy, and include a humidostat 49 for automatically controlling the operation of the solenoid 33 and the motor of the blower 38. The conductor QT includes a double-pole switch 44, and has a branch 4,6 leading to one terminal of the solenoid valve 33 controlling the water supply, a branch 45,

- leading to one terminal of the humidifier blower 38, and a branch 40*, in advance of the switch 44, leading to one terminal of the burner 42. The conductor 48 includes the burner relay or control device 43, and has branches 4!, 45 and 46 connected to the remaining terminals of the blower motor 42 of the burner 42, blower 38 and solenoid valve 33 respectively, thus operatively connecting said elements in order that the humidifying apparatus will be rendered operative when the oil burner 42 is operating, and rendered inoperative when the operation of the burner is discontinued.

The operation of the apparatus will be largely obvious from the foregoing description. It is to be noted, however, that by disposing the heating element l2 in spaced relation to the inner walls of the housing or casing 23 an approximately U-shaped passage duct is formed causing the vapor-charged fluid to contact with both of the, major sides and the bottom of the heating element in the passage of said fluid through the casing 23.

Further, it is to be noted that the water jet projected by the nozzle 32 forcibly against the distributing plate 35 serves to thoroughly atomize the water and causes the same to become thoroughly mixed with the incoming air, which enters the casing 23 at right angles to the normal plane of the heating element l2 before the vaporcharged mixture impinges upon the heated surfaces of said heating element to become heated ans-5,094

degree.

Further, it is to be noted that by providing the heating element upon both its outer and inner surfaces with vertically extending ribs or members l3, l4, respectively the heating element presents a relatively large volume of highly heated metal to the passage of the vaporized or atomized fluid mixture and causes said heating element to heat the same to such temperature as will deliver the fluid without undue condensation or sediment at the point of ultimate discharge.

Where the humidifying apparatus is described in the specification and claims as being connected to the water space of the boiler it is to be understood that said designation is not to be regarded as a limitation as the said term is merely employed as a matter of convenience since the apparatus is equally adapted for connection with the steam space or the heating fluid source of a boiler or other heating apparatus.-

' Having thus described our said invention what we claim and desire to secure by Letters Patent is:

1. A humidifying apparatus comprising a hollow heating element having an extended contact surface, vertical ribs upon the inner and outer surfaces thereof, means for connecting said heating element with the water space of a boiler, a casing enclosing said heating element with its walls in spaced relation to said heating element, air intake and outlet ports in said casing, a spray nozzle in said casing, a source of water supply therefor, a distributing plate closely associated with said heating element, a support for said distributing plate, means on said nozzle for adjustably securing said support in position; said spray nozzle serving to project a jet of water against said distributing plate to vaporize said water and mix the same with air and a blower connected with said casing for forcing the vaporcharged air through said casing and around said heating element.

2. A humidifying apparatus comprising a ho]- low heating element presenting an extended contact surface, means for connecting said heating element with the water space of a boiler, a casing enclosing said heating element with its wall in spaced relation to said heating element, air intake and outlet ports in said casing, a spray nozzle in said casing disposed at right angles to said heating element, a water supply pipe connected to said nozzle, a valve in said supply pipe, 9. distributing plate closely associated with the impact surface of said heating element, means for supporting said distributing plate, said spray nozzle serving to project a jet of water against said distributing plate to vaporize said water and mix the same with the air, a blower connected to said casing adjacent the intake port thereof for forcing the vapor-charged air against said heating element and through said casing, means for operating said blower, and means for controlling the operation of said water supply valve and said blower operating means.

3. A humidifying apparatus comprising a hollow heating element having a recess in its side, means connecting said heating element with the heating-fluid space of a boiler, a casing enclosing said heating element and having air intake and outlet means, a spray nozzle extending into a distributing plate disposed within the recess in said heating element, said spray nozzle serving to project the water against said distributing plate to atomize said water and to mix the same with the incoming air, and means associated with said casing for forcing the vapor-charged air againfit and around said heating element to heat the same and discharging the humidified air from said casing through the outlet means thereof.

t. A humidifying apparatus comprising a hol low heating element having extended opposite faces and a recess in one face at the upper portion thereof, a casing disposed about said heating element and spaced from said opposite faces to provide a passage extending about said heating element coextensive with said faces, means for closing said passage between the top of said heating element at the recessed side thereof and said casing, an'air intake portion disposed nor meal to the contiguous face of said heating element in line with the recess therein, an outlet port at the discharge end of said passage above said heating element, a distributing plate dis posed within said recess, means within said air intake portion for projecting a jet of water against said distributing plate and mixing the water with the incoming air in advance of said heating element, and means for forcing the humidified air through said passage and from said it, A unitary humidifying attachment for household boilers, comprising a hollow heating element including inlet and outlet pipe connections for the circulation therethrough of heating fluid from a boiler, said element including a pair of opposed upright side walls of relatively large areas, respectively, and bottom, top, and end walls joining the side walls at their marginal edges and spacing such side walls apart a relatively small distance to provide therewith a relatively thin, slab-like body; a casing enclosing said heating element and including a pair of opposed side walls and a bottom wall spaced respectively from the element side and bottom walls to provide therewith an approximately U-shaped air passage extending about said element; said casing having an air inlet opening in one side wall thereof at the top of one leg of said U- shaped passage and an air outlet opening at the top of the other leg of said passage; means above said inlet opening for closing the upper end of said one leg of the passage; a. humidifier casing secured to the outside of said first-named casing about said air inlet opening; a water spray device in said humidifier casing; a blower secured to said humidifier casing and operable to force air through said water spray and said air inlet opening and against the upper end of the adjacent element side wall and then through said air passage and the air outlet opening.

ROBERT E. DALY. BERNARD GOERG. 

